package com.jiaai.cloud.api.pay.utils;

import com.alipay.api.internal.util.AlipaySignature;
import com.jiaai.cloud.api.pay.entity.OrderInfo;
import org.apache.commons.lang3.time.DateUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * <p>
 *  支付宝工具类
 * </p>
 *
 * @author 佳爱网络科技
 * @version V1.0
 * @title AlipayUtils
 * @since 2017/8/7
 */
public class AlipayUtils {
    private static final SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private  static  final DecimalFormat df2 = new DecimalFormat("####.00");
    /**
     * 构造支付订单参数列表
     * @param orderInfo
     * @return
     */
    public static Map<String, String> buildOrderParamMap(String appId,OrderInfo orderInfo) throws UnsupportedEncodingException {
        Map<String, String> keyValues = new HashMap<String, String>();
        String money=df2.format(orderInfo.getMoney().doubleValue());
        String content="{\"timeout_express\":\"30m\",\"product_code\":\"QUICK_MSECURITY_PAY\",\"total_amount\":\""+money+"\",\"subject\":\""+orderInfo.getSubject()+"\",,\"out_trade_no\":\"" + orderInfo.getOrderNo() +  "\"}";

        keyValues.put("app_id", appId);

        keyValues.put("biz_content", content);

        keyValues.put("charset", "utf-8");

        keyValues.put("method", "alipay.trade.app.pay");

        keyValues.put("sign_type", "RSA2");
        keyValues.put("notify_url","http://jiai.tpddns.cn:8977/api/v1/payCallbak");

        keyValues.put("timestamp", formatter.format(new Date()));

        keyValues.put("version", "1.0");

        return keyValues;
    }
    /**
     * 构造支付订单参数信息
     *
     * @param map
     * 支付订单参数
     * @return
     */
    public static String buildOrderParam(Map<String, String> map) {
        List<String> keys = new ArrayList<String>(map.keySet());

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < keys.size() - 1; i++) {
            String key = keys.get(i);
            String value = map.get(key);
            sb.append(buildKeyValue(key, value, true));
            sb.append("&");
        }

        String tailKey = keys.get(keys.size() - 1);
        String tailValue = map.get(tailKey);
        sb.append(buildKeyValue(tailKey, tailValue, true));

        return sb.toString();
    }
    /**
     * 拼接键值对
     *
     * @param key
     * @param value
     * @param isEncode
     * @return
     */
    private static String buildKeyValue(String key, String value, boolean isEncode) {
        StringBuilder sb = new StringBuilder();
        sb.append(key);
        sb.append("=");
        if (isEncode) {
            try {
                sb.append(URLEncoder.encode(value, "UTF-8"));
            } catch (UnsupportedEncodingException e) {
                sb.append(value);
            }
        } else {
            sb.append(value);
        }
        return sb.toString();
    }

    /**
     * 对支付参数信息进行签名
     *
     * @param map
     *            待签名授权信息
     *
     * @return
     */
    public static String getSign(Map<String, String> map, String rsaKey) {
        List<String> keys = new ArrayList<String>(map.keySet());
        // key排序
        Collections.sort(keys);

        StringBuilder authInfo = new StringBuilder();
        for (int i = 0; i < keys.size() - 1; i++) {
            String key = keys.get(i);
            String value = map.get(key);
            authInfo.append(buildKeyValue(key, value, false));
            authInfo.append("&");
        }

        String tailKey = keys.get(keys.size() - 1);
        String tailValue = map.get(tailKey);
        authInfo.append(buildKeyValue(tailKey, tailValue, false));

        String oriSign = SignUtils.sign(authInfo.toString(), rsaKey,true);
        String encodedSign = "";

        try {
            encodedSign = URLEncoder.encode(oriSign, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return "sign=" + encodedSign;
    }

}
